While it's off the main topic of the blog, I've long been interested in research into the history of early Christianity, and have a few posts in the archives on books and articles I've read. I have a series of posts about the first three volumes of A Marginal Jew -- John P. Meier's opus on the historical Jesus (here, here, and here). Now the fourth volume is out, and I'm unlikely to get to it for some time. It happens there is a great summary and review at Loren Rossen's blog, the busybody; so I will happily outsource the work this time.
On a related topic, April DeConick has an interesting series of posts on the beginnings of Christianity going at her blog (first post in series here). I had a post reviewing her book on the Gospel of Judas here.